Enrique Pena Nieto

Reuters

Enrique Pena Nieto, former Mexico state governor and a presidential candidate for the Institutional Revolutionary Party (PRI), waves to supporters next to his wife Angelica Rivera on stage after filing for candidacy for his party in Mexico City. The front-runner in Mexico's 2012 presidential race on Sunday pledged to break past decades of political paralysis and deliver the country from a deepening spiral of drug violence and sluggish economic growth.

Enrique Pena Nieto, former Mexico state governor and a presidential candidate for the Institutional Revolutionary Party (PRI), waves to supporters next to his wife Angelica Rivera on stage after filing for candidacy for his party in Mexico City. The front-runner in Mexico's 2012 presidential race on Sunday pledged to break past decades of political paralysis and deliver the country from a deepening spiral of drug violence and sluggish economic growth.